Pixyish (5)
I believe the answer is:
elfin
'pixyish' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for elfin that I've seen before include "Small, with delicate frame" , "Delicately framed" , "Small, delicate, mischievous and attractive" , "Dainty" , "little character" .)